Rectified tidal transport in Lofoten–Vesterålen, northern Norway
Vestfjorden in northern Norway, a major spawning ground for the northeast Arctic cod, is sheltered from the continental shelf and open ocean by the Lofoten–Vesterålen archipelago. The archipelago, however, is well known for hosting strong and vigorous tidal currents in its many straits, currents tha...
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Copernicus Publications under license by EGU – European Geosciences Union GmbH
2021
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ftoslouniv:oai:www.duo.uio.no:10852/90323 2023-05-15T14:30:30+02:00 Rectified tidal transport in Lofoten–Vesterålen, northern Norway Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders 2021-12-03T16:10:17Z http://hdl.handle.net/10852/90323 http://urn.nb.no/URN:NBN:no-92917 https://doi.org/10.5194/os-17-1753-2021 EN eng Copernicus Publications under license by EGU – European Geosciences Union GmbH MI/181090 VIST/6168 http://urn.nb.no/URN:NBN:no-92917 Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders . Rectified tidal transport in Lofoten–Vesterålen, northern Norway. Ocean Science. 2021, 17, 1753-1773 http://hdl.handle.net/10852/90323 1964596 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ocean Science&rft.volume=17&rft.spage=1753&rft.date=2021 Ocean Science 17 6 1753 1773 https://doi.org/10.5194/os-17-1753-2021 URN:NBN:no-92917 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90323/1/borve_etal_os2021.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 1812-0784 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.5194/os-17-1753-2021 2022-02-02T23:34:33Z Vestfjorden in northern Norway, a major spawning ground for the northeast Arctic cod, is sheltered from the continental shelf and open ocean by the Lofoten–Vesterålen archipelago. The archipelago, however, is well known for hosting strong and vigorous tidal currents in its many straits, currents that can produce significant time-mean tracer transport from Vestfjorden to the shelf outside. We use a purely tidally driven unstructured-grid ocean model to look into non-linear tidal dynamics and the associated tracer transport through the archipelago. Of particular interest are two processes: tidal pumping through the straits and tidal rectification around islands. The most prominent tracer transport is caused by tidal pumping through the short and strongly non-linear straits Nordlandsflaget and Moskstraumen near the southern tip of the archipelago. Here, tracers from Vestfjorden are transported tens of kilometers westward out on the outer shelf. Further north, weaker yet notable tidal pumping also takes place through the longer straits Nappstraumen and Gimsøystraumen. The other main transport route out of Vestfjorden is south of the island of Røst. Here, the transport is primarily due to tracer advection by rectified anticyclonic currents around the island. There is also an anticyclonic circulation cell around the island group Mosken–Værøy, and both cells have flow speeds up to 0.2 m s−1, magnitudes similar to the observed background currents in the region. These high-resolution simulations thus emphasize the importance of non-linear tidal dynamics for transport of floating particles, like cod eggs and larvae, in the region. Article in Journal/Newspaper Arctic cod Arctic Lofoten Northeast Arctic cod Northern Norway Røst Vesterålen Vestfjorden Værøy Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Arctic Gimsøystraumen ENVELOPE(14.301,14.301,68.303,68.303) Lofoten Mosken ENVELOPE(12.755,12.755,67.746,67.746) Norway Røst ENVELOPE(11.983,11.983,67.467,67.467) Vesterålen ENVELOPE(14.939,14.939,68.754,68.754) Værøy ENVELOPE(12.693,12.693,67.664,67.664) Ocean Science 17 6 1753 1773 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Vestfjorden in northern Norway, a major spawning ground for the northeast Arctic cod, is sheltered from the continental shelf and open ocean by the Lofoten–Vesterålen archipelago. The archipelago, however, is well known for hosting strong and vigorous tidal currents in its many straits, currents that can produce significant time-mean tracer transport from Vestfjorden to the shelf outside. We use a purely tidally driven unstructured-grid ocean model to look into non-linear tidal dynamics and the associated tracer transport through the archipelago. Of particular interest are two processes: tidal pumping through the straits and tidal rectification around islands. The most prominent tracer transport is caused by tidal pumping through the short and strongly non-linear straits Nordlandsflaget and Moskstraumen near the southern tip of the archipelago. Here, tracers from Vestfjorden are transported tens of kilometers westward out on the outer shelf. Further north, weaker yet notable tidal pumping also takes place through the longer straits Nappstraumen and Gimsøystraumen. The other main transport route out of Vestfjorden is south of the island of Røst. Here, the transport is primarily due to tracer advection by rectified anticyclonic currents around the island. There is also an anticyclonic circulation cell around the island group Mosken–Værøy, and both cells have flow speeds up to 0.2 m s−1, magnitudes similar to the observed background currents in the region. These high-resolution simulations thus emphasize the importance of non-linear tidal dynamics for transport of floating particles, like cod eggs and larvae, in the region. |
format |
Article in Journal/Newspaper |
author |
Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders |
spellingShingle |
Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
author_facet |
Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders |
author_sort |
Børve, Eli |
title |
Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
title_short |
Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
title_full |
Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
title_fullStr |
Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
title_full_unstemmed |
Rectified tidal transport in Lofoten–Vesterålen, northern Norway |
title_sort |
rectified tidal transport in lofoten–vesterålen, northern norway |
publisher |
Copernicus Publications under license by EGU – European Geosciences Union GmbH |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/90323 http://urn.nb.no/URN:NBN:no-92917 https://doi.org/10.5194/os-17-1753-2021 |
long_lat |
ENVELOPE(14.301,14.301,68.303,68.303) ENVELOPE(12.755,12.755,67.746,67.746) ENVELOPE(11.983,11.983,67.467,67.467) ENVELOPE(14.939,14.939,68.754,68.754) ENVELOPE(12.693,12.693,67.664,67.664) |
geographic |
Arctic Gimsøystraumen Lofoten Mosken Norway Røst Vesterålen Værøy |
geographic_facet |
Arctic Gimsøystraumen Lofoten Mosken Norway Røst Vesterålen Værøy |
genre |
Arctic cod Arctic Lofoten Northeast Arctic cod Northern Norway Røst Vesterålen Vestfjorden Værøy |
genre_facet |
Arctic cod Arctic Lofoten Northeast Arctic cod Northern Norway Røst Vesterålen Vestfjorden Værøy |
op_source |
1812-0784 |
op_relation |
MI/181090 VIST/6168 http://urn.nb.no/URN:NBN:no-92917 Børve, Eli Isachsen, Pål Erik Nøst, Ole Anders . Rectified tidal transport in Lofoten–Vesterålen, northern Norway. Ocean Science. 2021, 17, 1753-1773 http://hdl.handle.net/10852/90323 1964596 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Ocean Science&rft.volume=17&rft.spage=1753&rft.date=2021 Ocean Science 17 6 1753 1773 https://doi.org/10.5194/os-17-1753-2021 URN:NBN:no-92917 Fulltext https://www.duo.uio.no/bitstream/handle/10852/90323/1/borve_etal_os2021.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/os-17-1753-2021 |
container_title |
Ocean Science |
container_volume |
17 |
container_issue |
6 |
container_start_page |
1753 |
op_container_end_page |
1773 |
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1766304335986163712 |